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Schedule of Principal Payments (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
2020 $ 31,349  
2021 39,087  
2022 292,981  
2023 904,110  
2024 194,937  
Thereafter 524,401  
Total debt $ 1,986,865 $ 1,814,795